NestedScrollView嵌套ListView，RecyclerView

NestedScrollView嵌套ListView，RecyclerView加上CollapsingToolbarLayout，

布局文件如下:

<?xml version="1.0" encoding="utf-8"?>

<android.support.design.widget.CoordinatorLayout

xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:app="http://schemas.android.com/apk/res-auto"

xmlns:tools="http://schemas.android.com/tools"

android:layout_width="match_parent"

android:layout_height="match_parent"

tools:context=".MainActivity">

<android.support.design.widget.AppBarLayout

android:layout_width="match_parent"

android:layout_height="256dp"

android:fitsSystemWindows="true">

<android.support.design.widget.CollapsingToolbarLayout

android:id="@+id/collapsing_toolbar_layout"

android:layout_width="match_parent"

android:layout_height="match_parent"

app:contentScrim="#30469b"

app:expandedTitleMarginStart="48dp"

app:layout_scrollFlags="scroll|exitUntilCollapsed">

<ImageView

android:layout_width="match_parent"

android:layout_height="match_parent"

android:scaleType="centerCrop"

android:src="@drawable/test"

app:layout_collapseMode="parallax"

app:layout_collapseParallaxMultiplier="0.7"/>

<android.support.v7.widget.Toolbar

android:id="@+id/toolbar"

android:layout_width="match_parent"

android:layout_height="?attr/actionBarSize"

app:layout_collapseMode="pin"

app:title="1111111111"/>

</android.support.design.widget.CollapsingToolbarLayout>

</android.support.design.widget.AppBarLayout>

<android.support.v4.widget.NestedScrollView

android:id="@+id/ScrollView_test"

android:layout_width="match_parent"

android:layout_height="match_parent"

app:layout_behavior="@string/appbar_scrolling_view_behavior">

<LinearLayout

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical">

<com.cjf.animation.NestedListView

android:id="@+id/listview_test"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layoutAnimation="@anim/layout_animation"></com.cjf.animation.NestedListView>

<android.support.v7.widget.RecyclerView

android:id="@+id/recycleView_test"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:layoutAnimation="@anim/layout_animation"></android.support.v7.widget.RecyclerView>

</LinearLayout>

</android.support.v4.widget.NestedScrollView>

</android.support.design.widget.CoordinatorLayout>

Activity代码如下:

package com.cjf.animation;

import android.graphics.Color;

import android.os.Bundle;

import android.support.annotation.Nullable;

import android.support.design.widget.CollapsingToolbarLayout;

import android.support.v4.widget.NestedScrollView;

import android.support.v7.app.AppCompatActivity;

import android.support.v7.widget.LinearLayoutManager;

import android.support.v7.widget.RecyclerView;

import android.support.v7.widget.Toolbar;

import android.view.View;

import android.view.Window;

import android.widget.ArrayAdapter;

import java.util.ArrayList;

public class LayoutAnimationActivity extends AppCompatActivity {

private NestedListView mListView;

private ArrayList<String> dataList;

private NestedScrollView ScrollView_test;

private RecyclerView recycleView_test;

@Override

protected void onCreate(@Nullable Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

requestWindowFeature(Window.FEATURE_NO_TITLE);

setContentView(R.layout.activity_layoutanimation);

initView();

initData();

}

private void initView() {

mListView = (NestedListView) findViewById(R.id.listview_test);

recycleView_test= (RecyclerView) findViewById(R.id.recycleView_test);

ScrollView_test = (NestedScrollView) findViewById(R.id.ScrollView_test);

//解决recycleview与NestedScrollView滑动冲突，注意support:appcompat-v7,要23以上

LinearLayoutManager mLinearLayoutManager = new LinearLayoutManager(this);

mLinearLayoutManager.setSmoothScrollbarEnabled(true);

mLinearLayoutManager.setAutoMeasureEnabled(true);

recycleView_test.setLayoutManager(mLinearLayoutManager);

recycleView_test.setHasFixedSize(true);

recycleView_test.setNestedScrollingEnabled(false);

Toolbar mToolbar = (Toolbar) findViewById(R.id.toolbar);

setSupportActionBar(mToolbar);

getSupportActionBar().setDisplayHomeAsUpEnabled(true);

mToolbar.setNavigationOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

onBackPressed();

}

});

//使用CollapsingToolbarLayout必须把title设置到CollapsingToolbarLayout上，设置到Toolbar上则不会显示

CollapsingToolbarLayout mCollapsingToolbarLayout = (CollapsingToolbarLayout) findViewById(R.id.collapsing_toolbar_layout);

mCollapsingToolbarLayout.setTitle("CollapsingToolbarLayout");

//通过CollapsingToolbarLayout修改字体颜色

mCollapsingToolbarLayout.setExpandedTitleColor(Color.WHITE);//设置还没收缩时状态下字体颜色

mCollapsingToolbarLayout.setCollapsedTitleTextColor(Color.GREEN);//设置收缩后Toolbar上字体的颜色

}

private void initData() {

dataList = new ArrayList<>();

for (int i = 0; i < 30; i++) {

dataList.add("这是测试数据" + i);

}

recycleView_test.setAdapter(new MyAdapter<String>(dataList,this));

mListView.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, dataList));

}

}

Adapter：

package com.cjf.animation;

import android.content.Context;

import android.support.v7.widget.RecyclerView;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.TextView;

import java.util.ArrayList;

import java.util.List;

public class MyAdapter<String> extends RecyclerView.Adapter {

private List<String> dataList;

private Context context;

private LayoutInflater layoutInflater;

public MyAdapter(ArrayList<String> dataList, Context context) {

this.dataList = dataList;

this.context = context;

layoutInflater = LayoutInflater.from(context);

}

@Override

public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

View itemView = layoutInflater.inflate(R.layout.listitem_test, parent, false);

return new MyViewHolder(itemView);

}

@Override

public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {

MyViewHolder myholder = (MyViewHolder) holder;

myholder.tv_test.setText((CharSequence) dataList.get(position));

}

@Override

public int getItemCount() {

return dataList.size();

}

class MyViewHolder extends RecyclerView.ViewHolder {

public TextView tv_test;

public MyViewHolder(View itemView) {

super(itemView);

tv_test = (TextView) itemView.findViewById(R.id.tv_test);

}

}

}

重写ListView：

package com.cjf.animation;

import android.content.Context;

import android.util.AttributeSet;

import android.view.MotionEvent;

import android.view.View;

import android.view.ViewGroup;

import android.widget.AbsListView;

import android.widget.ListAdapter;

import android.widget.ListView;

public class NestedListView extends ListView implements View.OnTouchListener,

AbsListView.OnScrollListener {

private int listViewTouchAction;

private static final int MAXIMUM_LIST_ITEMS_VIEWABLE = 99;

public NestedListView(Context context, AttributeSet attrs) {

super(context, attrs);

listViewTouchAction = -1;

setOnScrollListener(this);

setOnTouchListener(this);

}

@Override

public void onScroll(AbsListView view, int firstVisibleItem,

int visibleItemCount, int totalItemCount) {

if (getAdapter() != null

&& getAdapter().getCount() > MAXIMUM_LIST_ITEMS_VIEWABLE) {

if (listViewTouchAction == MotionEvent.ACTION_MOVE) {

scrollBy(0, -1);

}

}

}

@Override

public void onScrollStateChanged(AbsListView view, int scrollState) {

}

@Override

protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

super.onMeasure(widthMeasureSpec, heightMeasureSpec);

int newHeight = 0;

final int heightMode = MeasureSpec.getMode(heightMeasureSpec);

int heightSize = MeasureSpec.getSize(heightMeasureSpec);

if (heightMode != MeasureSpec.EXACTLY) {

ListAdapter listAdapter = getAdapter();

if (listAdapter != null && !listAdapter.isEmpty()) {

int listPosition = 0;

for (listPosition = 0; listPosition < listAdapter.getCount()

&& listPosition < MAXIMUM_LIST_ITEMS_VIEWABLE; listPosition++) {

View listItem = listAdapter.getView(listPosition, null,

this);

// now it will not throw a NPE if listItem is a ViewGroup

// instance

if (listItem instanceof ViewGroup) {

listItem.setLayoutParams(new LayoutParams(

LayoutParams.WRAP_CONTENT,

LayoutParams.WRAP_CONTENT));

}

listItem.measure(widthMeasureSpec, heightMeasureSpec);

newHeight += listItem.getMeasuredHeight();

}

newHeight += getDividerHeight() * listPosition;

}

if ((heightMode == MeasureSpec.AT_MOST) && (newHeight > heightSize)) {

if (newHeight > heightSize) {

newHeight = heightSize;

}

}

} else {

newHeight = getMeasuredHeight();

}

setMeasuredDimension(getMeasuredWidth(), newHeight);

}

public boolean onTouch(View v, MotionEvent event) {

if (getAdapter() != null

&& getAdapter().getCount() > MAXIMUM_LIST_ITEMS_VIEWABLE) {

if (listViewTouchAction == MotionEvent.ACTION_MOVE) {

scrollBy(0, 1);

}

}

return false;

}

}

测试基本实现，有Bug欢迎反馈，一起讨论解决。